1 {scene: Hospital waiting room}1 Mercutio: I feel like a doctor is going to appear suddenly and interrupt us with dramatic news.2 {beat}3 Mercutio: I said: "I feel like a doctor is going to appear suddenly and interrupt us with dramatic news."4 Mercutio: Stupid narrative causality.

In Pratchett's Discworld novels, Death is a skeletal guy in a dark cloak with a hood, who carries a scythe - because that's what people
believe; it's what Death should be in some sense*. Dragons breathe fire because that's what dragons do. A million to one
longshot chance happens nine times out of ten.

Hollywood also loves narrative causality. It's the reason you can predict how 95% of movies and TV shows will go. The guy and the girl
have some sort of misunderstanding which threatens their budding relationship, but they sort it out in the end. We all know it always happens
that way. The reason is because that's how the story should happen - narrative causality at its most raw and powerful. Television
sitcoms do it too. You can tell what the next gag is going to be because that's how things work on TV. If a character says something like.
"I feel like a doctor is going to appear suddenly and interrupt us with dramatic news," then a second later a doctor will suddenly appear
with dramatic news.

At least, that's how it works in stories.

* Any resemblance to certain completely unrelated characters in a certain webcomic are completely coincidental.